I need help finding the formulas!! Please

If Exan uses fiFO for its inventory valuation, calculate the cost, of ending inventory and cost of goods sold if ending inventory is 110 barrels of crude od Note: Use cells A4 to 010 from the given information to complete this question. \begin{tabular}{|l|r|r|} \hline & Units (barrels) & Costs \\ \hline Beginning inventory & 125 & $11,875 \\ \hline Purchases & 240 & 23,320 \\ Goods available for sale & & \\ Ending inventory & 1105 & \\ Cost of goods sold & 255 & \\ \hline \end{tabular}